On Mon, 2008-07-28 at 15:02 -0700, Philip Weaver wrote:
However, passing the same CPP definition via cabal does not work.
runhaskell Setup.hs build --ghc-options=-DFOO="\"hello world\""
runhaskell Setup.hs build --ghc-options=-DFOO='"hello world"'
With either of these commands, I get the same error message as above. This is understandable, since cabal has to evaluate the string before sending it to GHC, so I lose my escaped quotes.
Cabal has both --prog-option= and --prog-options=. The latter tokenises the options and passes them as separate flags (like what the shell does), the former passes the whole arg as one option. So you want to use: cabal build --ghc-option=-DFOO="\"hello world\"" When you want to put this in the .cabal file, use cpp-options (not ghc-options) and you can use Haskell String syntax for options that contain spaces. Duncan